<template>
  <div>         
         <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区 -->
    <el-card>
        <!-- 为 ECharts 准备一个定义了宽高的 DOM -->
    <div id="main" style="width: 750px;height:400px;"></div>
    </el-card>
    </div>
</template>

<script>
//1.导入echarts
import *as echarts from "echarts"
import _ from "lodash"
export default {
 name:"Report",
 data(){
     return{
         //需要合并的数据
          options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              boundaryGap: false
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ]
        }
  
     }
 },
 created(){
    //此时,页面上的元素,已经被渲染完毕了!
 },
 async mounted(){
    // 3.基于准备好的dom，初始化echarts实例 
      var myChart = echarts.init(document.getElementById('main'));

  const {data:res} = await this.$http.get("reports/type/1")
    if (res.meta.status !==200) {
        return this.$message.error("获取折现图数据失败")
    } 
     //4. 准备数据和配置项和合并数据项
           const result =  _.merge(res.data,this.options)
      //5.展示数据
       myChart.setOption(result)
},
 methods:{

 }
}
</script>

<style>

</style>